Flue for cooking-stoves



H. BLEECKER.

Cooking Stove. K No. 8,718. Patented sepr. 18, 1849.

n. rmns. Mmmm mmm. me

STATES PATET FFIJCE.

HENRY BLEECKER, OF ALBANY, NEW YORK.

FLU'E FOR COOKING-STOVES.

Specification of Letters Patent No.

. Improvement in Cooking-Stoves, which is described as follows,reference being had 4to the annexedA drawings, making part of thisspecification.

Figure 1 is a perspective view of the front portion of the bottom fluesbeneath the oven of a cooking stove, a fragment of the plate (A)composing the bottom of the oven being in its proper place. Fig. 2 is asimilar view of the flues, the said fragment of the bottom oven plate(A) being removed. Fig. 3 is a longitudinal section of the bottom iueson the line x .fr of Fig. 4. Fig. 4 is a vertical transverse section onthe line o, 0, Fig. 3 looking toward the rear. Fig. 5 is a verticaltransverse section on the line .e z Fig. 3 looking toward the front.

Similar let-ters in the several figures refer to corresponding parts.The arrows show the directions of the draft.

The improvement in which my invention consists is the manner in whichthe conveying flues (m n) are reverted into the return flue (F), in thechamber at the front of the stove. The useful purpose, claimed to bediscovered in this construction, is securing a more steady and effectualheat at the extreme front part of the oven, at the same time combiningthe advantages of heating the outsides of the oven through the flues (mI do not set up the combination of ues, as represented, to be new, ex-

`cept so far as they are combined with the reverting chamber in front.The objection, in use, to flues constructed so as to convey the heatfirst along the outsides, and return it'through the center, in a chamberpartially divided by division plates such as (B and C), has been thatthe front ends of these division plates must necessarily be so farremoved from the front plate (D), in order to afford suicient space forthe current of heat to travel in, that much of the heat escapes into thereturn flue without imparting the desired quantity of heat to theextreme front of the oven. In other cases, when the division plates areextended .nearer to the front to compel the heat to a greater proximity4with the front of the oven, the object is not attained, because theoutlets from the conveying flues to the returning flue are so muchcontracted as to impair the draft and the general heat is abated to avery injurious degree. When 6,718, dated September 18, 1849.

these two objections are obviated, this con struction is believed to bethe most perfect and practicable of any flues in use. The manner inwhich these difficulties are overcome in my invention is by forming achamber D in front of the plate (H), above the angular plate (K), bymeans of which I am enabled to distribute the heat along the wholebreadth of the stove, thus securing the necessary space in which torevert the current of heated air, at the same time bringing it within avery close proximity with the front plate In the chamber thus formed,the angular shape of the plate (K), affords an advantage by compellingthe largest proportions of heat-to the outsides, under t-he front `ofthe oven, so that the outer front corners, which in most flues areimperfectly heated, have an increased supply. The angular shape of theplate (K), also affords more reverting space along the line of the frontedge, than a straight plate would admit of, which enables me to bring'the current of heat still nearer the front than if it were reverted in ahori- Zontal sheet. I also make a depression in the front of the bottomplate (L), in order to allow the reverting current ample room and draftin gathering into the return flue.

In lues of the construction before alluded to when the chamber under theoven is simply divided by partial division plates such as (B and C), itis supposed that the two outside iues being diametrically opposite inentering into the return iue, encounter each other and tend to acollision which in a measure neutralizes the draft; which in myinvention is avoided by allowing the currents gradually to converge andunite in the return flue. The current of heat in going and returning iskept in con# stant contact with the bottom oven plate except inreverting under the plate I do not claim the division plates (B and C)or the flues formed by them.

lVhat I claim as my invention and desire to secure by Let-ters Patent isThe revert-ing chamber D formed by the angular plates K and plate Hunder the front. of the bottom of the oven, as herein set forth, whenthis is combined with the tlues formed by the plates (B and C) as hereindescribed.

HENRY BLE-ECKER.

lVitnesses:

HENRY S. lVILsoN, REUBEN M. VAN SICKLER.

